F 150 2WD Pickup V8-4.6L SOHC VIN W (1998)
6. Remove the A/C tube lock coupling spring with a small hooked wire.
CAUTION: Do not use a screwdriver or similar tool to remove the A/C tube lock coupling spring; this can cause axial scratches across the O-ring
grooves resulting in refrigerant leaks.
CLEANING
1. Fabricate a cleaning tool from a 1/8 inch diameter brazing rod.
2. Cut an abrasive pad from maroon colored 3M Scotch Brite(r) with the dimensions corresponding to the coupling size.
Coupling Size
Pad Size
3/8 inch
25 X 50 mm (1 X 2 inch)
1/2 inch
25 X 50 mm (1 X 2 inch)
5/8 inch
25 X 76 mm (1 X 3 inch)
3/4 inch
25 X 102 mm (1 X 4 inch)
3. Assemble the pad to the tool.
4. Coat the abrasive pad with Motorcraft YN-12b refrigerant oil or equivalent meeting Ford specification WSH-M1C231-B.
5. Roll the pad on the tool and install it in a variable speed drill motor.